Friday Onyekwere Nwosu

@unilorin.edu.ng

Professor, Faculty of Physical Sciences
Professor, Faculty of Physical Sciences
University of Ilorin

Friday Onyekwere Nwosu


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https://researchid.co/friday2019

RESEARCH, TEACHING, or OTHER INTERESTS

Chemistry, Analytical Chemistry
14

Scopus Publications

636

Scholar Citations

12

Scholar h-index

18

Scholar i10-index

Scopus Publications

  • Comparative Studies of Synthesized Copper Oxide Nanoparticles using Aqueous Extract of Leaves
    Emmanuel Oyetola, Friday Nwosu, Gboyega Oluwaseun Oyeleke, Ismaila Olawale, Bosede Mofoluwake Adegoke, et al.
    Nanochemistry Research, 2023
    The use of plant extracts as reducing agents in the synthesis of metal and metal oxide nanoparticles has come into prominence due to their procedural simplicity, precursor’s eco-friendliness, and cost effectiveness. The phytochemicals in plant extracts works as a reductant when mixed with metal salt solution. In this study, we compared the percentage yields of copper oxide (CuO) nanoparticles synthesized using aqueous leaf extracts of Psidium guajava (guava), Terminalia catappa (tropical almond), Cymbopogon citratus (lemon grass), and Tithonia diversifolia (mexican sunflower) at varying volume-ratios with copper sulphate standard solutions. The optimization study of the biosynthesis mixtures revealed that the mixture with the volume-ratio 1:1 of Cu salt : plant extract gave the highest yields in all samples. The nanoparticles were characterized using Fourier-transformed infra-red (FT-IR) to confirm characteristic bands expected of metal oxide particles at the finger print region. The transmission electron microscope (TEM) presented the average sizes within the range of 3.68 and 7.92 nm, while the energy dispersive X-ray Spectroscopy (EDS) confirmed their high purity due to the absence of other elements except carbon. The biosynthesized nanoparticles are highly pure with their small sizes and this makes them suitable for adsorption applications.
  • Corrosion inhibition of mild steel using parinari polyandra leave extracts in diluted hydrochloric acids
    F O Nwosu, S O Amusat
    Portugaliae Electrochimica Acta, 2021
    Metallic materials remain an indispensable element in industries. The present study is aimed at the assessment of Parinari polyandra leaves inhibition properties on mild steel in a 1 M HCl solution. This was investigated using gravimetric and electrochemical methods. Physicochemical and spectroscopic analyses of the leaves extract were done using standard methods. A yield of 19.82% was obtained, while the leaves extract FTIR spectra showed bands of 3404 cm -1 and 2926 cm -1 , which indicated the presence of a strong band of phenolic O-H and C-H stretch functional groups, respectively. A maximum corrosion inhibition efficiency of 97.22% was obtained. Langmuir adsorption isotherm fitted the inhibitor data well. From electrochemical methods, the corrosion rate value of 17.626 mmpy obtained for the uninhibited mild steel was higher than 0.02044 – 2.2267 mmpy range values recorded for the mild steel surface covered with P. polyandra leaves extract in an acidic medium. SEM images showed the leaves extract inhibition effect against mild steel corrosion in a 1 M HCl solution. Electrochemical analysis using the Tafel plot also showed the leaves extract corrosion inhibition capacity, suggesting a mixed type inhibitor. Thus, P. polyandra leaves extract might act as a green corrosion inhibitor for mild steel utilized in industrial applications.
  • Colorimetric Based Polysorbate Crosslinked Cellulose-Ag–Cu Nanohybrid Sensor for Urea Sensing Applications
    Friday O. Nwosu, Oluwaseyi D. Saliu, Khadijat A. Oyinlola, Ebunoluwa O. Ojo
    Journal of Polymers and the Environment, 2020
  • A cooling potential of formulated bio-quenchant oils on a cast aluminium alloy material
    Journal of Chemical Technology and Metallurgy, 2020
  • Seasonal evaluation of chemical compositions of dust fall at motor parks in a Nigerian university campus
    F. O. Nwosu, O. D. Olayinka
    International Journal of Environmental Science and Technology, 2019
  • Adsorption of chlorotriazine herbicide onto unmodified and modified kaolinite: Equilibrium, kinetic and thermodynamic studies
    Friday Onyekwere Nwosu, Oluwaseun Jacob Ajala, Fatai Olaiwola Okeola, Samad Alaya Adebayo, Oluyemi K. Olanlokun, Abiodun Omodele Eletta
    Egyptian Journal of Aquatic Research, 2019
    In the recent time, adsorption is a commonly economical way for removal of pollutants from wastewater. Chlorotriazine has been a serious threat to life of both human and animal. Modified kaolinite clays were separately prepared by chemical impregnation method with 2 M H2SO4 and 2 M NaOH respectively in w/v of 1:2 for a period of 24 h to give unmodified kaolinite (UKC), 2 M H2SO4 modified kaolinite (2-AKC) and 2 Mm3 NaOH modified kaolinite clays (2-BKC) respectively. The UKC with maximum intake value (125.3 mg/g) was derived at equilibrium of 1100 mg/L while 96.65 mg g−1 of 2-AKC was obtained at equilibrium of 500 mg L−1 and that of 2-BKC was found at equilibrium of 700 mg/L. The Langmuir isotherm best explained the removal of Chlorotriazine onto various kaolinite clays while pseudo 2nd order kinetics fitted best. Thus, kaolinite clays have been proved as a potential adsorbent for the removal of chlorotriazine molecules.
  • Mild steel corrosion inhibition in a NaCl solution by lignin extract of chromolaena odorata
    M M Muzakir, F O Nwosu, S O Amusat
    Portugaliae Electrochimica Acta, 2019
    The inhibitive action of Chromolaena odorata stems extract, in various concentrations, against mild steel corrosion in a 1 M NaCl solution , was studied using weight loss, potentiodynamic polarization methods and scanning e lectron microscopy. Maximum inhibition efficiency of 99.83 % was obtained, at 3 03 K, for an extract concentration of 3000 mgL. The activation and free energies for the inhibiti on reactions supported the physical adsorption mechanism. The extract adsorpti on onto the mild steel surface was found to be exothermic, spontaneous, and to obey th e Langmuir adsorption model. FTIR analysis showed the presence of hydroxyl (OH) an d carbonyl(C=O) functional groups and aromatic rings in lignin, which are the binding groups that might be responsible for lignin’s inhibitive action against mild steel corrosion. Furthermore, SEM analysis revealed that the mild steel surface was a ffected by lignin’s adsorption, due to the formation of a protective film.
  • Adsorption of atrazine from aqueous solution using unmodified and modified bentonite clays
    Oluwaseun Jacob Ajala, Friday Onyekwere Nwosu, Rasheed Kayode Ahmed
    Applied Water Science, 2018
    Properties of raw bentonite clay of Afuze in Edo state which are abundant and cheap bentonite mineral in Nigeria as adsorbents for the removal of atrazine in aqueous solution were investigated. The bentonite clay-types were characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectrophotometry and X-ray diffraction (XRD). Batch adsorption experiments were carried out to determine the equilibrium characteristics, thermodynamics and kinetics of the sorption processes. The data obtained were subjected to Langmuir, Freundlich and Temkin isotherm equations, while pseudo-first-order, pseudo-second-order rate equations, intra-particle diffusion and Elovich models were considered for kinetics and mechanism. The results showed that the adsorption processes were described by different isotherm models; they were all spontaneous (∆G ranges from − 938.34 to − 6263.58 kJ/mol) and exothermic (range of ∆H is − 252.73 to − 1057.08 kJ/mol), and with decreased randomness, ∆S (− 3.110 to − 0.581 J.mol/K). Pseudo-second-order kinetics model gave the better fit for all the sorption processes which implies physisorption process as the rate limiting step. Thus, bentonite clay-types can be used to adsorb atrazine.
  • Preparation and characterization of adsorbents derived from bentonite and kaolin clays
    Friday Onyekwere Nwosu, Oluwaseun Jacob Ajala, Rukayat Motunrayo Owoyemi, Bukola Ganiyat Raheem
    Applied Water Science, 2018
    The comparative study on preparation and characterization of modified bentonite and kaolin clay types is aimed at establishment of the ability of these clay types to adsorb pollutants. Its low cost, availability and recovery of clay give it added advantage of an effective adsorbent. The modified clay types were prepared by impregnation using various concentrations of either H2SO4 or NaOH in w/v ratio of 1:2. The physicochemical and adsorptive properties were investigated using standard physicochemical methods like moisture content, bulk density, pH, iodine and methylene blue numbers. FTIR, XRD and SEM analyses were also conducted on these clay types. Unmodified kaolin clay exhibited lowest moisture content (1.12%) while unmodified bentonite clay type had highest value (3.98%). The peaks at 3435 cm−1 and 3410 cm−1 assigned N–H stretching frequency were obtained for 2 M H2SO4 modified and unmodified bentonite clay types, respectively. The peaks at 912 cm−1 and 914 cm−1 that indicate the presence of Al–Al–OH deformation frequency were obtained for unmodified bentonite clay type and 2 M H2SO4 modified bentonite clay, respectively. The physical surface morphology of the clay types revealed the presence of pores with irregular shapes, while their XRD analysis showed that the clay types are crystalline. The modified clay types exhibited better potential adsorbent for removal of small metallic or gas molecules as well as large organic molecules. Adsorbents could also remove cations or anions of pollutants since their surface charge could be positive or negative depending upon pH condition.
  • Thermodynamic and adsorption studies of corrosion inhibition of mild steel using lignin from siam weed (chromolaena odorata) in acid medium
    Journal of Materials and Environmental Science, 2016
  • The production of activated carbon from nigerian mineral coal via steam activation
    Friday Onyekwere Nwosu, Bamidele Iromidayo Olu-Owolabi, Kayode Oyebode Adebowale
    Pakistan Journal of Scientific and Industrial Research Series A Physical Sciences, 2011
  • The potential of Terminalia catappa (Almond) and Hyphaene thebaica (Dum palm) fruits as raw materials for livestock feed
    African Journal of Biotechnology, 2008
  • Anti-fungal activities of m-iodobenzoic acid and some of its metal derivatives on bread mucor
    Bulletin of the Chemical Society of Ethiopia, 2005
  • Comparison of some preconcentration methods for certain metal ions in human milk and yogurts
    Bulletin of the Chemical Society of Ethiopia, 2003

RECENT SCHOLAR PUBLICATIONS

  • Process Optimization of Solvent-Free Transesterification of Palm Kernel Oil for Biodiesel Production
    UB Eke, LI Alhaji, S Degni, SO Owalude, AO Michael, FO Nwosu, ...
    Journal of Pure and Applied Sciences (Science Forum) 26 (1) , 2026
    2026
  • Kinetic studies of effects of heat on PET plastics: TGA, DTA, XRD and DSC analysis
    A Nurudeen, F Nwosu, M Soliu
    International Research Journal of Pure and Applied Chemistry 25 (1), 61-72 , 2024
    2024
    Citations: 3
  • Comparative Studies of Synthesized Copper Oxide Nanoparticles Using Aqueous Extract of Leaves
    EO Oyetola, FO Nwosu, GO Oyeleke, IJ Olawale, B Mofoluwake Adegoke, ...
    Nanochemistry Research 8 (2), 141-151 , 2023
    2023
    Citations: 2
  • Equilibrium and kinetic studies on the removal of mordant black 11 dye from aqueous solution and real tannery effluents using CuFe2O4/Ac nanocomposites
    MR Abdullahi, FO Nwosu
    Applied Journal of Environmental Engineering Science 8 (4), & al./Appl. J … , 2022
    2022
    Citations: 3
  • Effects of Phoenix dactylifera Tree Fruit Extract on Cadmium Induced Renal Damage in Adult Wistar Rats.
    ROA Ehimigbai, F Nwosu
    Journal of Applied Sciences & Environmental Management 26 (5) , 2022
    2022
    Citations: 4
  • Comparative Characterization of Derived Vignasubterranea (L.) verdc. Adsorbents, Using Chemical and Steam Activation Methods
    MR Abdullahi, FO Nwosu, A Olanipekun
    ChemSearch Journal 13 (2), 99–108-99–108 , 2022
    2022
  • Corrosion inhibition of mild steel using parinari polyandra leave extracts in diluted hydrochloric acids
    FO Nwosu, SO Amusat
    Port Electrochim Acta 39, 431-449 , 2021
    2021
    Citations: 7
  • Investigation of pollution levels of soils within Petroleum Depots in Nigeria
    FO Nwosu, YO Olulegan, OD Olayinka, SF Fabiyi
    Journal of Chemical Society of Nigeria 46 (4) , 2021
    2021
    Citations: 6
  • Colorimetric based polysorbate crosslinked cellulose-Ag–Cu nanohybrid sensor for urea sensing applications
    FO Nwosu, OD Saliu, KA Oyinlola, EO Ojo
    Journal of Polymers and the Environment 28 (5), 1475-1483 , 2020
    2020
    Citations: 11
  • Assessment of heavy metals, organic carbon and physico-chemical properties of roadside dust from a Nigerian school campus
    OD Olayinka, FO Nwosu, SO Ahmed, SF Fabiyi, OJ Ajala
    Nigerian Journal of Environmental Sciences and Technology (NIJEST) Vol 4 (1 … , 2020
    2020
    Citations: 3
  • Cooling potential of formulated bio-quenchant oils on cast Aluminium alloy material
    A Adekunle, FO Nwosu, J Odusote, P Omoniyi, AA Adekunle, T Popoola, ...
    Journal of Chemical Technology and Metallurgy, 55 (5), 1140-1149 , 2020
    2020
    Citations: 6
  • Mild steel corrosion inhibition in a NaCl solution by lignin extract of Chromolaena odorata
    MM Muzakir, FO Nwosu, SO Amusat
    Sociedade Portuguesa de Electroquímica , 2019
    2019
    Citations: 28
  • Seasonal evaluation of chemical compositions of dust fall at motor parks in a Nigerian university campus
    FO Nwosu, OD Olayinka
    International Journal of Environmental Science and Technology 16 (11), 6921-6934 , 2019
    2019
    Citations: 6
  • Adsorption of chlorotriazine herbicide onto unmodified and modified kaolinite: Equilibrium, kinetic and thermodynamic studies
    FO Nwosu, OJ Ajala, FO Okeola, SA Adebayo, OK Olanlokun, AO Eletta
    Egyptian Journal of Aquatic Research 45 (2), 99-107 , 2019
    2019
    Citations: 24
  • Seasonal Variation Rates of Dust Fall at Motor Parks of University of Ilorin, Nigeria
    FO Nwosu, OD Olayinka, SA Adebayo, CO Akoshile
    Faculty of Engineering University of Maiduguri, Nigeria , 2019
    2019
  • A review of probabilistic approaches for available transfer capability calculation
    OO Mohammed, MW Mustafa, AO Otuoze, S Salisu, AY Abdulrahman
    Arid Zone Journal of Engineering, Technology and Environment 15 (1), 97-108 , 2019
    2019
    Citations: 4
  • Synthesis of New Mixed-Ligand Complexes of Molybdenum (IV) and Tungsten (IV): Characterization, Structure, Thermal and Anti-microbial Studies
    FS Fabiyi, FO Nwosu
    International Journal of Chemistry 11 (1), 43-51 , 2019
    2019
  • Seasonal variation in rates of dust fall at motor parks of University of Ilorin, Ilorin, Nigeria
    F Nwosu
    Arid Zone Journal of Engineering, Technology and Environment , 2019
    2019
    Citations: 1
  • Adsorption of atrazine from aqueous solution using unmodified and modified bentonite clays
    OJ Ajala, FO Nwosu, RK Ahmed
    Applied water science 8 (7), 214 , 2018
    2018
    Citations: 33
  • Preparation and characterization of adsorbents derived from bentonite and kaolin clays
    FO Nwosu, OJ Ajala, RM Owoyemi, BG Raheem
    Applied Water Science 8 (7), 195 , 2018
    2018
    Citations: 110

MOST CITED SCHOLAR PUBLICATIONS

  • Preparation and characterization of adsorbents derived from bentonite and kaolin clays
    FO Nwosu, OJ Ajala, RM Owoyemi, BG Raheem
    Applied Water Science 8 (7), 195 , 2018
    2018
    Citations: 110
  • The potential of Terminalia catappa (Almond) and Hyphaene thebaica (Dum palm) fruits as raw materials for livestock feed
    FO Nwosu, OO Dosumu, JOC Okocha
    African journal of Biotechnology 7 (24) , 2008
    2008
    Citations: 85
  • Thermodynamic and adsorption studies of corrosion inhibition of mild steel using lignin from siam weed (Chromolaena odorata) in acid medium
    FO Nwosu, MM Muzakir
    J. Mater. Environ. Sci 7 (5), 1663-1673 , 2016
    2016
    Citations: 49
  • Adsorption of atrazine from aqueous solution using unmodified and modified bentonite clays
    OJ Ajala, FO Nwosu, RK Ahmed
    Applied water science 8 (7), 214 , 2018
    2018
    Citations: 33
  • Antimicrobial studies and phytochemical screening of extracts of Hyphaene thebaica (Linn) Mart fruits.
    OO Dosumu, FO Nwosu, CD Nwogu
    2006
    Citations: 33
  • Comparative study of the constituents of the fruits pulps and seeds of Canarium ovatum, Persea americana and Dacryodes edulis
    OOOFONCM OKOYE
    Jordan Journal of Chemistry (JJC) 12 (2), 113-125 , 2017
    2017
    Citations: 30
  • Mild steel corrosion inhibition in a NaCl solution by lignin extract of Chromolaena odorata
    MM Muzakir, FO Nwosu, SO Amusat
    Sociedade Portuguesa de Electroquímica , 2019
    2019
    Citations: 28
  • Adsorption of chlorotriazine herbicide onto unmodified and modified kaolinite: Equilibrium, kinetic and thermodynamic studies
    FO Nwosu, OJ Ajala, FO Okeola, SA Adebayo, OK Olanlokun, AO Eletta
    Egyptian Journal of Aquatic Research 45 (2), 99-107 , 2019
    2019
    Citations: 24
  • Simple titrimetric colour indicators from some natural flower petals
    FO Nwosu, FA Adekola, KC Ihedioha
    Centrepoint (science edition) 12 (1), 74-89 , 2004
    2004
    Citations: 21
  • Adsorption of 4-Nitrophenol using pilli nut shell active carbon
    FO Nwosu, FA Adekola, AO Salami
    Pakistan Journal of Analytical & Environmental Chemistry 18 (1), 69-83 , 2017
    2017
    Citations: 15
  • Kinetics and thermodynamic adsorption of Pb (II) and Cd (II) ions from used oil onto thevetia neriifolia nutshell active carbon
    FO Nwosu, BI Olu-Owolab, KO Adebowale
    Current Research in Chemistry 4 (2), 26-40 , 2012
    2012
    Citations: 15
  • Comparative investigation of wear metals in virgin and used lubricant oils
    FO Nwosu, BI Olu-Owolabi, KO Adebowale, L Leke
    Terrestrial and Aquatic Environmental Toxicology 2 (1), 38-43 , 2008
    2008
    Citations: 13
  • Phytochemical screening and anti-microbial studies of extracts of Hyphaene thebaica linn (Mart) Palmae
    OO Dosumu, FO Nwosu, CJ Nwogu
    Int. J. Trop. Med 1 (4), 186-189 , 2006
    2006
    Citations: 12
  • Colorimetric based polysorbate crosslinked cellulose-Ag–Cu nanohybrid sensor for urea sensing applications
    FO Nwosu, OD Saliu, KA Oyinlola, EO Ojo
    Journal of Polymers and the Environment 28 (5), 1475-1483 , 2020
    2020
    Citations: 11
  • Isolation and physico-chemical characterization of Lignin from Chromolaena odorata and Tithonia diversifolia.
    MM Nwosu, F. O. & Muzakir
    Journal of Applied Science and Environmental Management 19 (4), 787 – 792 , 2015
    2015
    Citations: 11
  • Pore structure and surface functional groups on six tropical fruit nutshell active carbons
    FO Nwosu, BI Olu-Owolabi, KO Adebowale, T Henle, U Schwarzenbolz
    Bioremediat Biodivers Bioavailab 3, 89-95 , 2009
    2009
    Citations: 11
  • Comparison of Some Pre Concentration methods for certain Metal ions in Human Milk and Yoghurts.
    FAIE Nwosu, F.O., Adekola
    Bulletin Chemical Society of Ethiopia. 17 (1), 1 – 9 , 2003
    2003
    Citations: 11
  • Heavy metals and macronutrients content in selected herbal plants of South-Western Nigeria.
    AA Lasisi, BC Ejelonu, FO Nwosu, MA Olayiwola, AA Yusuff
    2006
    Citations: 10
  • Evaluation of some heavy metals loading in dust fall of three universities motor parks in Western Nigeria
    FO Nwosu, MOA Raheem, Z Shehu
    Journal of Applied Science & Environmental Management 20 (2), 327 , 2016
    2016
    Citations: 9
  • Removal of anthracene from solution using [Cu(INA)2] metal – organic frame work synthesized by a sol solvent free method.
    AC Tella, FO Nwosu, SE Elaigwu, CP Ezeh, VO Adimula
    Nigerian Journal of Materials Science and Engineering 7 (1.), 26 - 34 , 2016
    2016
    Citations: 8